When it spirals out of control, clean eating can lead to a relatively new classification of eating disorder called orthorexia. (businessinsider.com)
A number of Abu Dhabi hotels face a downgrade of their star ratings as the capital's strict new classification system comes into effect this summer. (breakingtravelnews.com)
[58] The MKK scheme was extended to O9.7 in 1971 [59] and O4 in 1978, [60] and new classification schemes that add types O2, O3 and O3.5 have subsequently been introduced. (en.wikipedia.org)